1 // 2 // Copyright 2017 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #pragma once 18 19 #include <hidl/HidlSupport.h> 20 21 #include "async_fd_watcher.h" 22 #include "hci_internals.h" 23 #include "hci_packetizer.h" 24 25 namespace android { 26 namespace hardware { 27 namespace bluetooth { 28 namespace hci { 29 30 using ::android::hardware::hidl_vec; 31 using PacketReadCallback = std::function<void(const hidl_vec<uint8_t>&)>; 32 33 class H4Protocol { 34 public: H4Protocol(int fd,PacketReadCallback event_cb,PacketReadCallback acl_cb,PacketReadCallback sco_cb)35 H4Protocol(int fd, PacketReadCallback event_cb, PacketReadCallback acl_cb, 36 PacketReadCallback sco_cb) 37 : uart_fd_(fd), 38 event_cb_(event_cb), 39 acl_cb_(acl_cb), 40 sco_cb_(sco_cb), 41 hci_packetizer_([this]() { OnPacketReady(); }) {} 42 43 size_t Send(uint8_t type, const uint8_t* data, size_t length); 44 45 void OnPacketReady(); 46 47 void OnDataReady(int fd); 48 49 private: 50 int uart_fd_; 51 52 PacketReadCallback event_cb_; 53 PacketReadCallback acl_cb_; 54 PacketReadCallback sco_cb_; 55 56 HciPacketType hci_packet_type_{HCI_PACKET_TYPE_UNKNOWN}; 57 HciPacketizer hci_packetizer_; 58 }; 59 60 } // namespace hci 61 } // namespace bluetooth 62 } // namespace hardware 63 } // namespace android 64